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Old 09-28-2008, 09:44 PM   #7 (permalink)
MetroMPG
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Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Metro
Team Metro
90 day: 67.07 mpg (US)

ForkenSwift - '92 Metro EV
90 day: 125.37 mpg (US)

U.F.O. - '00 Insight
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Quote:
Originally Posted by brucepick View Post
My understanding is that ScanGauge calculates fuel consumption based on injector open time and frequency - and calculates that against speed to get mpg.
My understanding is that the SG does not have access to injector pulse width/frequency, and that it's extrapolating fuel use assuming stoichiometric ratios, based on displacement, RPM, speed, etc. So it can't actually "see" lean burn mode.

Quote:
Two Caveats For Hybrid Car Owners. First, I found the ScanGauge mpg calculations cannot accommodate the lean burn engine found in specific hybrid cars, such as the 5-speed Honda Insight. - Source
Maybe this has been addressed since I first heard about it. But I would certainly check into it before ordering a SG.
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